WO2018037687A1 - Receiving device and receiving system - Google Patents

Receiving device and receiving system Download PDF

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Publication number
WO2018037687A1
WO2018037687A1 PCT/JP2017/022640 JP2017022640W WO2018037687A1 WO 2018037687 A1 WO2018037687 A1 WO 2018037687A1 JP 2017022640 W JP2017022640 W JP 2017022640W WO 2018037687 A1 WO2018037687 A1 WO 2018037687A1
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Prior art keywords
frequency
circuits
circuit
signal
mixing
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PCT/JP2017/022640
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French (fr)
Japanese (ja)
Inventor
仁人 鈴木
佐生　登
宜克 神宮
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ソニーセミコンダクタソリューションズ株式会社
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Priority to JP2018535482A priority Critical patent/JP6952040B2/en
Priority to DE112017004165.1T priority patent/DE112017004165T5/en
Publication of WO2018037687A1 publication Critical patent/WO2018037687A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite

Definitions

  • This technology relates to a wireless communication and broadcast receiving device. More specifically, the present invention relates to a satellite broadcast receiving apparatus and receiving system that can broadcast a plurality of channels in a relatively wide frequency band.
  • Broadcast channels must be expanded in response to demands for increasing and diversifying the amount of TV broadcast data.
  • Japan in order to perform 4K broadcasting and 8K broadcasting, advancement of satellite broadcasting such as expansion of signal formats and increase in the number of channels is being promoted.
  • the input frequency band of the receiving module is expanded and the number of channels is increased.
  • a modulation scheme such as 16APSK or 32APSK is used in addition to the conventional 8PSK. Therefore, the SNR in the receiving apparatus is required to be higher than before. That is, the reception performance cannot be allowed to deteriorate.
  • an input signal from an antenna is amplified by a high frequency circuit (RF (Radio Frequency) circuit) and input to a mixing circuit (MIX circuit).
  • RF Radio Frequency
  • MIX mixing circuit
  • the local oscillation frequency setting of the local oscillation signal generation circuit inside the reception module is switched according to the signal frequency of the reception channel, and a local oscillation signal (LO (Local Oscillator) signal) based on the switching is input to the mixing circuit.
  • the mixing circuit multiplies the high-frequency signal and the local oscillation signal to down-convert the signal to a low-frequency signal having an intermediate frequency (IF: Intermediate ⁇ ⁇ ⁇ Frequency) or a baseband frequency (BB: BaseBand).
  • IF Intermediate ⁇ ⁇ ⁇ Frequency
  • BB BaseBand
  • the conventional technique has a big problem that it is difficult to suppress deterioration of reception performance while maintaining low power consumption.
  • the present technology has been created in view of such a situation, and an object of the present technology is to prevent deterioration in reception performance while preventing increase in power consumption with respect to an increase in the number of channels in a reception apparatus.
  • the present technology has been made to solve the above-described problems, and a first aspect thereof includes a plurality of input terminals that separately receive high-frequency signals from one antenna, and each of the plurality of input terminals. And a plurality of high frequency circuits that handle high frequency signals from the one antenna in different frequency bands, and a local oscillation that generates a local oscillation frequency corresponding to each of the frequency bands of the plurality of high frequency circuits.
  • a signal generation circuit Generated by a signal generation circuit, a plurality of mixing circuits that mix the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively, and the plurality of mixing circuits And a receiving system including a receiving circuit that combines and outputs the combined low-frequency signals.
  • the high frequency circuit and the mixing circuit are provided for each frequency band.
  • the apparatus further includes a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high-frequency circuits and the plurality of mixing circuits that conforms to the frequency band related to the instruction input. May be. This brings about the effect
  • the plurality of input terminals may receive the high-frequency signal that has been subjected to filter processing according to each frequency band. This brings about the effect
  • the plurality of high frequency circuits may handle high frequency signals of television broadcasting.
  • the plurality of high frequency circuits may handle high frequency signals of satellite broadcasting.
  • other input terminals that receive high-frequency signals from other antennas that receive terrestrial broadcasts, and other high-frequency signals that handle high-frequency signals of terrestrial broadcasts from other antennas in the frequency band from the other input terminals.
  • a high-frequency signal from the other high-frequency circuit may be further mixed to generate a low-frequency signal.
  • the reception apparatus can prevent deterioration in reception performance while preventing increase in power consumption with respect to an increase in the number of channels.
  • the effects described here are not necessarily limited, and may be any of the effects described in the present disclosure.
  • FIG. 1 is a diagram illustrating a configuration example of a reception system according to the first embodiment of the present technology.
  • the receiving system according to the first embodiment is a device that receives a television broadcast, and includes an antenna 100, a first filter 210, a second filter 220, and a receiving device 300.
  • the antenna 100 is an antenna for receiving satellite broadcasting.
  • a reception signal (high frequency signal) received by the antenna 100 is supplied to the first filter 210 and the second filter 220.
  • the first filter 210 and the second filter 220 are filters that allow a high-frequency signal supplied from the antenna 100 to pass a necessary signal and attenuate an unnecessary signal.
  • the first filter 210 passes a signal in a relatively high frequency band among high-frequency signals and attenuates a signal in a relatively low frequency band.
  • the second filter 220 passes a signal in a relatively low frequency band among high-frequency signals and attenuates a signal in a relatively high frequency band.
  • only a necessary signal can be supplied in the receiving apparatus 300. That is, when the frequency band is widened by increasing the number of channels, the frequency band of the received signal can be divided and input to the receiving apparatus 300. Thereby, the linearity requested
  • FIG. 2 is a diagram illustrating an example of filtering processing by the first filter 210 and the second filter 220 according to the first embodiment of the present technology. It can be seen that the first filter 210 passes a high frequency band signal and attenuates a low frequency band signal with respect to the output of the antenna 100. Also, it can be seen that the second filter 220 passes a signal in a low frequency band and attenuates a signal in a high frequency band.
  • the first filter 210 and the second filter 220 are an example of a plurality of filters described in the claims.
  • the receiving device 300 receives a high frequency signal from the antenna 100 via the first filter 210 and the second filter 220 and performs a process of down-converting to a low frequency signal.
  • the receiving apparatus 300 includes a first high-frequency circuit 310, a second high-frequency circuit 320, a local oscillation signal generation circuit 340, a first mixing circuit 350, a second mixing circuit 360, a merging circuit 370, and a control unit 380. And a low-frequency circuit 390.
  • the receiving apparatus 300 includes input terminals 301, 302, and 308 and an output terminal 309.
  • the output of the first filter 210 is supplied to the input terminal 301.
  • the output of the second filter 220 is supplied to the input terminal 302.
  • a signal for controlling the receiving apparatus 300 is supplied to the input terminal 308.
  • a receiving channel instruction operation is input to the input terminal 308.
  • the output terminal 309 outputs a low-frequency signal of the reception channel designated by the instruction operation input as an output of the receiving device 300.
  • the input terminals 301 and 302 are an example of a plurality of input terminals described in the claims.
  • the first high frequency circuit 310 is a circuit that handles a high frequency signal of a relatively high frequency band supplied from the first filter 210.
  • the first high-frequency circuit 310 includes a low noise amplifier (LNA: Low Noise Amplifier) 311, a variable gain amplifier (VGA: Variable Gain Amplifier) 312, and a bandpass filter (BPF) 313.
  • the low noise amplifier 311 is an amplifier that amplifies the received signal supplied to the input terminal 301.
  • the variable gain amplifier 312 is an amplifier for controlling the gain.
  • the bandpass filter 313 is a filter for limiting the frequency band. The frequency band passing through the band pass filter 313 is a relatively high frequency band handled by the first high frequency circuit 310.
  • the second high frequency circuit 320 is a circuit that handles a high frequency signal in a relatively low frequency band supplied from the second filter 220. Similar to the first high frequency circuit 310, the second high frequency circuit 320 includes a low noise amplifier 321, a variable gain amplifier 322, and a band pass filter 323.
  • the low noise amplifier 321 is an amplifier that amplifies the reception signal supplied to the input terminal 302.
  • the variable gain amplifier 322 is an amplifier for controlling the gain.
  • the band pass filter 323 is a filter for limiting the frequency band.
  • the frequency band passing through the band pass filter 323 is a relatively low frequency band handled by the second high frequency circuit 320 and is different from the frequency band of the band pass filter 313.
  • the first high-frequency circuit 310 and the second high-frequency circuit 320 are an example of a plurality of high-frequency circuits described in the claims.
  • the local oscillation signal generation circuit 340 is a circuit that generates a local oscillation signal.
  • the local oscillation signal generation circuit 340 includes a phase locked loop (PLL: Phase Locked Loop) 341 and buffers 345 and 346.
  • the phase synchronization circuit 341 is a circuit that outputs an AC signal synchronized with a certain frequency.
  • the buffers 345 and 346 are circuits that output the output of the phase synchronization circuit 341 as a local oscillation signal.
  • the local oscillation signal generated by the local oscillation signal generation circuit 340 is supplied to the first mixing circuit 350 and the second mixing circuit 360.
  • the first mixing circuit 350 mixes the high frequency signal in the relatively high frequency band output from the first high frequency circuit 310 and the local oscillation signal supplied from the local oscillation signal generation circuit 340 to generate a low frequency signal. Circuit.
  • the second mixing circuit 360 mixes the high frequency signal of the relatively low frequency band output from the second high frequency circuit 320 and the local oscillation signal supplied from the local oscillation signal generation circuit 340 to generate a low frequency signal.
  • the first mixing circuit 350 and the second mixing circuit 360 are an example of a plurality of mixing circuits described in the claims.
  • the merge circuit 370 is a circuit that merges the low frequency signals generated by the first mixing circuit 350 and the second mixing circuit 360 and outputs a low frequency signal from one of them.
  • the control unit 380 controls each unit of the receiving device 300.
  • the control unit 380 operates only a circuit suitable for the frequency band in accordance with an instruction input of the reception channel. That is, if the reception channel has a relatively high frequency band, the first high frequency circuit 310 and the first mixing circuit 350 are operated, while the second high frequency circuit 320 and the second mixing circuit 360 are not operated. I do. If the reception channel is in a relatively low frequency band, the second high frequency circuit 320 and the second mixing circuit 360 are operated, while the first high frequency circuit 310 and the first mixing circuit 350 are not operated. I do.
  • the low frequency circuit 390 is a circuit that handles a low frequency signal output from the junction circuit 370 and includes a low-pass filter (LPF) 391 and a variable gain amplifier 392.
  • the low-pass filter 391 is a filter for limiting the frequency band.
  • the frequency band that passes through the low-pass filter 391 is the frequency band of the low-frequency signal, and is different from the frequency band of the band-pass filters 313 and 323. Note that a band pass filter may be used instead of the low pass filter 391 as long as it corresponds to a frequency band suitable for the low frequency circuit 390.
  • the variable gain amplifier 392 is an amplifier for controlling the gain.
  • FIG. 3 is a diagram illustrating an example of operation control of the reception device according to the embodiment of the present technology.
  • the control unit 380 performs control to operate only a circuit that conforms to the frequency band in accordance with the instruction input of the reception channel. Therefore, if the reception channel has a relatively high frequency band, the control unit 380 asserts the enable signals ENA1 to ENA5 and does not assert (deassert) the enable signals ENB1 to ENB5. Further, if the reception channel has a relatively low frequency band, the control unit 380 asserts the enable signals ENB1 to ENB5 and does not assert (deassert) the enable signals ENA1 to ENA5.
  • enable signals ENA1 to ENA5 and ENB1 to ENB5 are distributed to the first high frequency circuit 310, the second high frequency circuit 320, the first mixing circuit 350, the second mixing circuit 360, and the local oscillation signal generation circuit 340. That is, the enable signal ENA1 is supplied to the buffer 345.
  • the enable signal ENA2 is supplied to the first mixing circuit 350.
  • the enable signal ENA3 is supplied to the band pass filter 313.
  • the enable signal ENA4 is supplied to the variable gain amplifier 312.
  • the enable signal ENA5 is supplied to the low noise amplifier 311.
  • the enable signal ENB1 is supplied to the buffer 346.
  • the enable signal ENB2 is supplied to the second mixing circuit 360.
  • the enable signal ENB3 is supplied to the band pass filter 323.
  • the enable signal ENB4 is supplied to the variable gain amplifier 322.
  • the enable signal ENB5 is supplied to the low noise amplifier 321.
  • the reception channel is in a relatively high frequency band
  • the first high frequency circuit 310 and the first mixing circuit 350 that match the frequency band operate, and the other second high frequency circuit 320 and the second mixing circuit. 360 is controlled not to operate.
  • the reception channel is in a relatively low frequency band
  • the second high frequency circuit 320 and the second mixing circuit 360 that match the frequency band operate, and the other first high frequency circuit 310 and the first mixing circuit 350 operate. Is controlled not to operate. Therefore, unnecessary circuit operations can be suppressed in accordance with the frequency band of the reception channel, and power saving can be achieved.
  • FIG. 4 is a diagram illustrating a circuit configuration example of the first mixing circuit 350, the second mixing circuit 360, and the merging circuit 370 according to the embodiment of the present technology. In this example, it is assumed that each part of the circuit operates with a differential signal.
  • the first mixing circuit 350 includes two transconductance amplifiers 351 and 352 and four switch transistors 353 to 356.
  • the transconductance amplifiers 351 and 352 output a signal having a current value corresponding to the voltage of the high-frequency signal output from the first high-frequency circuit 310.
  • the transconductance amplifiers 351 and 352 are supplied with an enable signal ENA2.
  • the switch transistors 353 to 356 are circuits that switch the signals output from the transconductance amplifiers 351 and 352 in accordance with the local oscillation signal from the buffer 345.
  • the second mixing circuit 360 includes two transconductance amplifiers 361 and 362 and four switch transistors 363 to 366.
  • the transconductance amplifiers 361 and 362 output a signal having a current value corresponding to the voltage of the high frequency signal output from the second high frequency circuit 320.
  • the transconductance amplifiers 361 and 362 are supplied with an enable signal ENB2.
  • the switch transistors 363 to 366 are circuits that switch the signals output from the transconductance amplifiers 361 and 362 in accordance with the local oscillation signal from the buffer 346.
  • the junction circuit 370 includes an operational amplifier 371 and feedback resistors 372 and 373. These operate in the low frequency band of the intermediate frequency or baseband frequency, and output a signal having a voltage value corresponding to the current of the signal from the first mixing circuit 350 and the second mixing circuit 360.
  • the linearity requirement of the circuit can be relaxed.
  • Second Embodiment> In the above-described first embodiment, it is assumed that satellite broadcasting is received. However, in the second embodiment described below, it is assumed that the receiving device 300 further receives terrestrial broadcasting.
  • FIG. 5 is a diagram illustrating a configuration example of a reception system according to the second embodiment of the present technology.
  • the reception system according to the second embodiment includes a terrestrial antenna 103 in addition to the configuration of the first embodiment.
  • the receiving apparatus 300 further includes an input terminal 303 and receives a terrestrial broadcast reception signal (high frequency signal) from the terrestrial antenna 103.
  • the input terminal 303 is an example of another input terminal described in the claims.
  • the receiving device 300 further includes a third high-frequency circuit 330.
  • the output of the third high frequency circuit 330 is supplied to the second mixing circuit 360.
  • a switching circuit 369 is provided in front of the second mixing circuit 360, and the output of either the second high-frequency circuit 320 or the third high-frequency circuit 330 is supplied to the second mixing circuit 360.
  • the second mixing circuit 360 generates a local oscillation signal generation circuit for either a high-frequency signal in a relatively high frequency band output from the first high-frequency circuit 310 or a high-frequency signal in terrestrial broadcasting output from the third high-frequency circuit 330.
  • the local oscillation signal supplied from 340 is mixed to generate a low frequency signal.
  • Other configurations are the same as those in the first embodiment described above.
  • the third high-frequency circuit 330 is an example of another high-frequency circuit described in the claims.
  • the presence / absence of the operation may be controlled using the enable signal from the control unit 380, as in the first embodiment.
  • a high-frequency circuit is provided for each frequency band of the satellite broadcast reception channel, and a high-frequency circuit for the frequency band of the terrestrial broadcast is further provided to further receive the terrestrial broadcast. be able to. Since the high frequency circuit can be adapted to each frequency band, reception characteristics can be improved.
  • the phase synchronization circuit 341 is provided as a common circuit regardless of the frequency band. However, this may be provided for each frequency band. Thereby, a circuit configuration optimized for each frequency band can be employed.
  • the high-frequency circuit and the mixing circuit for each frequency band of the reception channel, it is possible to relax the requirement for the linearity of the circuit. Further, power saving can be achieved by operating only necessary circuits according to the frequency band of the reception channel.
  • a frequency signal band selection filter can be mounted outside the receiving device, and the linearity requirement for the high-frequency circuit can be relaxed. As a result, it is possible to improve reception performance by improving NF (noise figure) characteristics and the like while suppressing an increase in power consumption.
  • the operating frequency range of each circuit in the receiving device can be narrowed, and power consumption can be reduced and characteristics can be improved.
  • power can be saved by controlling the circuit groups in the frequency band other than the reception channel not to operate.
  • unnecessary signals can be blocked by this, and interference between input signals in the respective frequency bands can be suppressed.
  • the embodiment of the present technology it is possible to provide a receiving device that can receive without deteriorating reception performance while preventing increase in power consumption with respect to an increase in the number of channels necessary for 4K broadcasting or 8K broadcasting. can do.
  • this technique can also take the following structures. (1) a plurality of input terminals that separately receive high-frequency signals from one antenna; A plurality of high frequency circuits provided corresponding to each of the plurality of input terminals and handling high frequency signals from the one antenna in different frequency bands; A local oscillation signal generation circuit that generates a local oscillation frequency corresponding to the frequency band of each of the plurality of high-frequency circuits; A plurality of mixing circuits for mixing the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively; A receiving device comprising: a combining circuit that combines and outputs the low-frequency signals generated in the plurality of mixing circuits.
  • a receiving system comprising: a merging circuit that merges and outputs the low-frequency signals generated in the plurality of mixing circuits.
  • the method according to (7) further comprising a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high frequency circuits and the plurality of mixing circuits that conforms to the frequency band according to the instruction input.
  • the receiving system described. It further includes a plurality of filters that perform a filtering process according to each frequency band on the high-frequency signal from the one antenna,
  • each of the plurality of high-frequency circuits treats outputs of the plurality of filters as high-frequency signals from the one antenna.
  • the one antenna is an antenna for receiving satellite broadcasting, The reception system according to any one of (7) to (10), wherein the plurality of high frequency circuits handle high frequency signals in different frequency bands of satellite broadcasting. (12) Other antennas for receiving terrestrial broadcasts; And further comprising another high-frequency circuit that handles high-frequency signals of terrestrial broadcasting from the other antennas, The receiving system according to (11), wherein one of the plurality of mixing circuits further mixes high-frequency signals from the other high-frequency circuits to generate a low-frequency signal.

Abstract

A receiving device, wherein the degradation of receiving performance is prevented while preventing an increase in power consumption for an increased number of channels. A plurality of input terminals receive a high-frequency signal from one antenna separately. A plurality of high-frequency circuits are provided in correspondence to each of the plurality of input terminals and handle the high-frequency signal from one antenna in frequency bands different from each other. A local oscillation signal generation circuit generates a local oscillation frequency that corresponds to the frequency band of each of the plurality of high-frequency circuits. A plurality of mixing circuits mix a high-frequency signal from each of the plurality of high-frequency circuits with a local oscillation frequency corresponding thereto and generate a low-frequency signal each. A merging circuit merges the low-frequency signals generated in the plurality of mixing circuits and outputs the merged signal.

Description

受信装置および受信システムReceiving apparatus and receiving system
　本技術は、無線通信や放送の受信装置に関する。詳しくは、比較的広い周波数帯域において複数チャンネルの放送がなされる衛星放送の受信装置および受信システムに関する。 This technology relates to a wireless communication and broadcast receiving device. More specifically, the present invention relates to a satellite broadcast receiving apparatus and receiving system that can broadcast a plurality of channels in a relatively wide frequency band.
　テレビ放送のデータ量の増大や多様化などの要求に対して、放送チャンネルの拡張が必須となっている。特に、日本においては、４Ｋ放送や８Ｋ放送を行うために、信号フォーマットの拡張やチャンネル数の増加などの衛星放送の高度化が進められている。これにより、受信モジュールの入力周波数帯域が拡張され、多チャンネル化がなされる方向にある。また、４Ｋ放送や８Ｋ放送を行うためにはデータ転送レートを高める必要があるため、従来の８ＰＳＫに留まらず、１６ＡＰＳＫや３２ＡＰＳＫ等の変調方式を用いられる。そのため、受信装置におけるＳＮＲは従来以上に高いものが要求される。すなわち、受信性能の劣化が許容できない状況になる。 Broadcast channels must be expanded in response to demands for increasing and diversifying the amount of TV broadcast data. In particular, in Japan, in order to perform 4K broadcasting and 8K broadcasting, advancement of satellite broadcasting such as expansion of signal formats and increase in the number of channels is being promoted. As a result, the input frequency band of the receiving module is expanded and the number of channels is increased. Moreover, since it is necessary to increase the data transfer rate in order to perform 4K broadcasting or 8K broadcasting, a modulation scheme such as 16APSK or 32APSK is used in addition to the conventional 8PSK. Therefore, the SNR in the receiving apparatus is required to be higher than before. That is, the reception performance cannot be allowed to deteriorate.
　一般的な受信モジュールにおいては、アンテナからの入力信号を高周波回路（ＲＦ（Radio Frequency）回路）で増幅して、混合回路（ＭＩＸ回路）に入力する。一方、受信チャンネルの信号周波数に応じて、受信モジュール内部の局部発振信号生成回路の局部発振周波数設定を切り替え、それに基づいた局部発振信号（ＬＯ（Local Oscillator）信号）を混合回路に入力する。混合回路では高周波信号と局部発振信信号を乗算することにより、中間周波数（ＩＦ：Intermediate Frequency）またはベースバンド周波数（ＢＢ：BaseBand）の低周波信号にダウンコンバートする。そして、その出力を、中間周波数帯域またはベースバンド周波数帯域の比較的低い周波帯のフィルタにおいてチャンネル選択を行い、これにより不要チャンネル信号を減衰させ、所望の受信チャンネル信号の選択を実現している（例えば、特許文献１参照。）。 In a general receiving module, an input signal from an antenna is amplified by a high frequency circuit (RF (Radio Frequency) circuit) and input to a mixing circuit (MIX circuit). On the other hand, the local oscillation frequency setting of the local oscillation signal generation circuit inside the reception module is switched according to the signal frequency of the reception channel, and a local oscillation signal (LO (Local Oscillator) signal) based on the switching is input to the mixing circuit. The mixing circuit multiplies the high-frequency signal and the local oscillation signal to down-convert the signal to a low-frequency signal having an intermediate frequency (IF: Intermediate ま た は Frequency) or a baseband frequency (BB: BaseBand). The output is subjected to channel selection in a filter having a relatively low frequency band of the intermediate frequency band or the baseband frequency band, thereby attenuating unnecessary channel signals and realizing selection of a desired reception channel signal ( For example, see Patent Document 1.)
特開２０１３－２３６１９６号公報JP 2013-236196 A
　上述の従来技術では、高周波回路および混合回路に対しては、所望の受信チャンネル信号以外の、不要信号となる多チャンネルの信号も合わせて入力される。このため、これら回路群の入出力の非線形性により、所望信号の信号品質の劣化が生じてしまう。具体的には、多数の不要信号が入力されることにより、相互変調、混変調、高調波等の発生により所望信号の品質が劣化してしまう。 In the above-described conventional technology, multi-channel signals that are unnecessary signals other than the desired reception channel signal are also input to the high-frequency circuit and the mixing circuit. For this reason, the signal quality of the desired signal is degraded due to the nonlinearity of the input / output of these circuit groups. Specifically, when a large number of unnecessary signals are input, the quality of the desired signal deteriorates due to generation of intermodulation, cross modulation, harmonics, and the like.
　上述のチャンネル数の増加に伴い、不要チャンネル信号の数が増えることになるため、受信装置において従来同様またはそれ以上の受信性能を得るためには、高周波回路および混合回路に対する線形性の要求が厳しくなる。高周波回路や混合回路の線形性の改善には、電源電圧の増加や回路電流の増加による対策が一般的である。すなわち、チャンネル数の増加に対して、低消費電力を保ちながら従来と同等の受信性能を得るのは非常に困難である。 As the number of channels increases, the number of unnecessary channel signals increases. Therefore, in order to obtain a reception performance that is the same as or higher than that of a conventional receiver, the linearity requirements for high-frequency circuits and mixing circuits are severe. Become. In order to improve the linearity of a high-frequency circuit or a mixed circuit, countermeasures by increasing the power supply voltage or the circuit current are generally used. That is, as the number of channels increases, it is very difficult to obtain reception performance equivalent to the conventional one while maintaining low power consumption.
　また、上述の入力周波数帯域の拡張は、単純に入力周波数範囲が広がることになるため、高周波回路、混合回路、ＬＯ生成回路においては、信号増幅、乗算、局部発振信号生成などを行う動作周波数範囲が広くなってしまう。一般に動作周波数の高い、高周波回路、混合回路、局部発振信号生成回路において、動作周波数の広帯域化への対応は、消費電力が増加してしまう懸念を併せ持っている。 In addition, since the above-described expansion of the input frequency band simply expands the input frequency range, the operating frequency range for performing signal amplification, multiplication, local oscillation signal generation, etc., in high-frequency circuits, mixing circuits, and LO generation circuits. Will become wider. In general, in a high-frequency circuit, a mixing circuit, and a local oscillation signal generation circuit having a high operating frequency, handling of a wide operating frequency has a concern that power consumption increases.
　このように、従来技術においては、低消費電力を保ちながら受信性能の劣化を抑えることは困難であるという大きな課題がある。本技術はこのような状況に鑑みて生み出されたものであり、受信装置において、チャンネル数の増加に対して、消費電力の増大を防ぎつつ、受信性能の劣化を防止することを目的とする。 As described above, the conventional technique has a big problem that it is difficult to suppress deterioration of reception performance while maintaining low power consumption. The present technology has been created in view of such a situation, and an object of the present technology is to prevent deterioration in reception performance while preventing increase in power consumption with respect to an increase in the number of channels in a reception apparatus.
　本技術は、上述の問題点を解消するためになされたものであり、その第１の側面は、１つのアンテナからの高周波信号を別々に受ける複数の入力端子と、上記複数の入力端子の各々に対応して設けられて上記１つのアンテナからの高周波信号を互いに異なる周波数帯域において扱う複数の高周波回路と、上記複数の高周波回路の各々の上記周波数帯域に対応した局部発振周波数を生成する局部発振信号生成回路と、上記複数の高周波回路の各々からの上記高周波信号とそれに対応する上記局部発振周波数とを混合してそれぞれ低周波信号を生成する複数の混合回路と、上記複数の混合回路において生成された低周波信号を合流させて出力する合流回路とを具備する受信装置およびその受信装置を含む受信システムである。これにより、高周波回路および混合回路をそれぞれの周波数帯域ごとに設けるという作用をもたらす。 The present technology has been made to solve the above-described problems, and a first aspect thereof includes a plurality of input terminals that separately receive high-frequency signals from one antenna, and each of the plurality of input terminals. And a plurality of high frequency circuits that handle high frequency signals from the one antenna in different frequency bands, and a local oscillation that generates a local oscillation frequency corresponding to each of the frequency bands of the plurality of high frequency circuits. Generated by a signal generation circuit, a plurality of mixing circuits that mix the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively, and the plurality of mixing circuits And a receiving system including a receiving circuit that combines and outputs the combined low-frequency signals. As a result, the high frequency circuit and the mixing circuit are provided for each frequency band.
　また、この第１の側面において、周波数帯域の指示入力を受けて上記複数の高周波回路および上記複数の混合回路のうち上記指示入力に係る周波数帯域に適合するもののみを動作させる制御部をさらに具備してもよい。これにより、不要な周波数帯域の高周波回路および混合回路の動作を抑制するという作用をもたらす。 In addition, in the first aspect, the apparatus further includes a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high-frequency circuits and the plurality of mixing circuits that conforms to the frequency band related to the instruction input. May be. This brings about the effect | action of suppressing operation | movement of the high frequency circuit and mixing circuit of an unnecessary frequency band.
　また、この第１の側面において、上記複数の入力端子は、それぞれの周波数帯域に応じたフィルタ処理が施された上記高周波信号を受けるようにしてもよい。これにより、不要な周波数帯域の高周波信号の受信装置への入力を抑制するという作用をもたらす。 In the first aspect, the plurality of input terminals may receive the high-frequency signal that has been subjected to filter processing according to each frequency band. This brings about the effect | action which suppresses the input to the receiver of the high frequency signal of an unnecessary frequency band.
　また、この第１の側面において、上記複数の高周波回路は、テレビ放送の高周波信号を扱うようにしてもよい。また、上記複数の高周波回路は、衛星放送の高周波信号を扱うようにしてもよい。また、地上波放送を受信する他のアンテナからの高周波信号を受ける他の入力端子と、上記他の入力端子からの周波数帯域において上記他のアンテナからの地上波放送の高周波信号を扱う他の高周波回路とをさらに具備し、上記複数の混合回路の一つは、上記他の高周波回路からの高周波信号をさらに混合して低周波信号を生成するようにしてもよい。 In the first aspect, the plurality of high frequency circuits may handle high frequency signals of television broadcasting. The plurality of high frequency circuits may handle high frequency signals of satellite broadcasting. In addition, other input terminals that receive high-frequency signals from other antennas that receive terrestrial broadcasts, and other high-frequency signals that handle high-frequency signals of terrestrial broadcasts from other antennas in the frequency band from the other input terminals. A high-frequency signal from the other high-frequency circuit may be further mixed to generate a low-frequency signal.
　本技術によれば、受信装置において、チャンネル数の増加に対して、消費電力の増大を防ぎつつ、受信性能の劣化を防止することができるという優れた効果を奏し得る。なお、ここに記載された効果は必ずしも限定されるものではなく、本開示中に記載されたいずれかの効果であってもよい。 According to the present technology, it is possible to achieve an excellent effect that the reception apparatus can prevent deterioration in reception performance while preventing increase in power consumption with respect to an increase in the number of channels. Note that the effects described here are not necessarily limited, and may be any of the effects described in the present disclosure.
本技術の第１の実施の形態における受信システムの構成例を示す図である。It is a figure showing an example of composition of a receiving system in a 1st embodiment of this art. 本技術の第１の実施の形態における第１フィルタ２１０および第２フィルタ２２０によるフィルタリング処理の一例を示す図である。It is a figure showing an example of filtering processing by the 1st filter 210 and the 2nd filter 220 in a 1st embodiment of this art. 本技術の実施の形態における受信装置の動作制御の一例を示す図である。It is a figure showing an example of operation control of a receiving device in an embodiment of this art. 本技術の実施の形態における第１混合回路３５０、第２混合回路３６０および合流回路３７０の回路構成例を示す図である。It is a figure which shows the circuit structural example of the 1st mixing circuit 350, the 2nd mixing circuit 360, and the confluence | merging circuit 370 in embodiment of this technique. 本技術の第２の実施の形態における受信システムの構成例を示す図である。It is a figure showing an example of composition of a receiving system in a 2nd embodiment of this art.
　以下、本技術を実施するための形態（以下、実施の形態と称する）について説明する。説明は以下の順序により行う。
　１．第１の実施の形態（衛星放送を受信する１つのアンテナからの高周波信号を複数の高周波回路により処理する例）
　２．第２の実施の形態（地上波放送を受信する他のアンテナからの高周波信号を他の高周波回路により処理する例）
　３．変形例 Hereinafter, modes for carrying out the present technology (hereinafter referred to as embodiments) will be described. The description will be made in the following order.
1. First Embodiment (Example in which a high-frequency signal from one antenna that receives satellite broadcasting is processed by a plurality of high-frequency circuits)
2. Second Embodiment (Example in which a high-frequency signal from another antenna that receives terrestrial broadcasting is processed by another high-frequency circuit)
3. Modified example
　＜１．第１の実施の形態＞
　［受信システムの構成］
　図１は、本技術の第１の実施の形態における受信システムの構成例を示す図である。この第１の実施の形態における受信システムは、テレビ放送を受信する装置であり、アンテナ１００と、第１フィルタ２１０および第２フィルタ２２０と、受信装置３００とを備える。 <1. First Embodiment>
[Reception system configuration]
FIG. 1 is a diagram illustrating a configuration example of a reception system according to the first embodiment of the present technology. The receiving system according to the first embodiment is a device that receives a television broadcast, and includes an antenna 100, a first filter 210, a second filter 220, and a receiving device 300.
　アンテナ１００は、衛星放送を受信するためのアンテナである。このアンテナ１００によって受信された受信信号（高周波信号）は、第１フィルタ２１０および第２フィルタ２２０に供給される。 The antenna 100 is an antenna for receiving satellite broadcasting. A reception signal (high frequency signal) received by the antenna 100 is supplied to the first filter 210 and the second filter 220.
　第１フィルタ２１０および第２フィルタ２２０は、アンテナ１００から供給された高周波信号について、必要な信号を通過させ、不要な信号を減衰させるフィルタである。この例では、第１フィルタ２１０は、高周波信号のうち比較的高い周波数帯域の信号を通過させ、比較的低い周波数帯域の信号を減衰させている。一方、第２フィルタ２２０は、高周波信号のうち比較的低い周波数帯域の信号を通過させ、比較的高い周波数帯域の信号を減衰させている。これにより、受信装置３００において必要な信号のみを供給することができる。すなわち、チャンネル数の増加により周波数帯域が広がった場合において、受信信号の周波数帯域を分割して受信装置３００に入力することができる。これにより、受信装置３００に要求される線形性を緩和することができる。 The first filter 210 and the second filter 220 are filters that allow a high-frequency signal supplied from the antenna 100 to pass a necessary signal and attenuate an unnecessary signal. In this example, the first filter 210 passes a signal in a relatively high frequency band among high-frequency signals and attenuates a signal in a relatively low frequency band. On the other hand, the second filter 220 passes a signal in a relatively low frequency band among high-frequency signals and attenuates a signal in a relatively high frequency band. Thereby, only a necessary signal can be supplied in the receiving apparatus 300. That is, when the frequency band is widened by increasing the number of channels, the frequency band of the received signal can be divided and input to the receiving apparatus 300. Thereby, the linearity requested | required of the receiver 300 can be eased.
　これら第１フィルタ２１０および第２フィルタ２２０は、例えば、分波器（ダイプレクサ：Diplexer）等により実現することができる。図２は、本技術の第１の実施の形態における第１フィルタ２１０および第２フィルタ２２０によるフィルタリング処理の一例を示す図である。アンテナ１００の出力に対して、第１フィルタ２１０は、高い周波数帯域の信号を通過させ、低い周波数帯域の信号を減衰させていることがわかる。また、第２フィルタ２２０は、低い周波数帯域の信号を通過させ、高い周波数帯域の信号を減衰させていることがわかる。なお、第１フィルタ２１０および第２フィルタ２２０は、特許請求の範囲に記載の複数のフィルタの一例である。 These first filter 210 and second filter 220 can be realized by, for example, a duplexer. FIG. 2 is a diagram illustrating an example of filtering processing by the first filter 210 and the second filter 220 according to the first embodiment of the present technology. It can be seen that the first filter 210 passes a high frequency band signal and attenuates a low frequency band signal with respect to the output of the antenna 100. Also, it can be seen that the second filter 220 passes a signal in a low frequency band and attenuates a signal in a high frequency band. The first filter 210 and the second filter 220 are an example of a plurality of filters described in the claims.
　受信装置３００は、アンテナ１００から第１フィルタ２１０および第２フィルタ２２０を介して高周波信号を受けて、低周波信号にダウンコンバートする処理を行うものである。この受信装置３００は、第１高周波回路３１０と、第２高周波回路３２０と、局部発振信号生成回路３４０と、第１混合回路３５０と、第２混合回路３６０と、合流回路３７０と、制御部３８０と、低周波回路３９０とを備える。 The receiving device 300 receives a high frequency signal from the antenna 100 via the first filter 210 and the second filter 220 and performs a process of down-converting to a low frequency signal. The receiving apparatus 300 includes a first high-frequency circuit 310, a second high-frequency circuit 320, a local oscillation signal generation circuit 340, a first mixing circuit 350, a second mixing circuit 360, a merging circuit 370, and a control unit 380. And a low-frequency circuit 390.
　また、この受信装置３００は、入力端子３０１、３０２および３０８を備え、出力端子３０９を備える。入力端子３０１には第１フィルタ２１０の出力が供給される。入力端子３０２には第２フィルタ２２０の出力が供給される。入力端子３０８には受信装置３００を制御するための信号が供給される。例えば、この入力端子３０８には受信チャンネルの指示操作が入力される。出力端子３０９は、この受信装置３００の出力として、指示操作入力により指示された受信チャンネルの低周波信号を出力する。なお、入力端子３０１および３０２は、特許請求の範囲に記載の複数の入力端子の一例である。 The receiving apparatus 300 includes input terminals 301, 302, and 308 and an output terminal 309. The output of the first filter 210 is supplied to the input terminal 301. The output of the second filter 220 is supplied to the input terminal 302. A signal for controlling the receiving apparatus 300 is supplied to the input terminal 308. For example, a receiving channel instruction operation is input to the input terminal 308. The output terminal 309 outputs a low-frequency signal of the reception channel designated by the instruction operation input as an output of the receiving device 300. The input terminals 301 and 302 are an example of a plurality of input terminals described in the claims.
　第１高周波回路３１０は、第１フィルタ２１０から供給された比較的高い周波数帯域の高周波信号を扱う回路である。この第１高周波回路３１０は、低雑音増幅器（ＬＮＡ：Low Noise Amplifier）３１１と、可変利得増幅器（ＶＧＡ：Variable Gain Amplifier）３１２と、バンドパスフィルタ（ＢＰＦ）３１３とを備える。低雑音増幅器３１１は、入力端子３０１に供給された受信信号を増幅するアンプである。可変利得増幅器３１２は、利得を制御するためのアンプである。バンドパスフィルタ３１３は、周波数帯域を制限するためのフィルタである。このバンドパスフィルタ３１３を通過する周波数帯域は、第１高周波回路３１０が扱う比較的高い周波数帯域である。 The first high frequency circuit 310 is a circuit that handles a high frequency signal of a relatively high frequency band supplied from the first filter 210. The first high-frequency circuit 310 includes a low noise amplifier (LNA: Low Noise Amplifier) 311, a variable gain amplifier (VGA: Variable Gain Amplifier) 312, and a bandpass filter (BPF) 313. The low noise amplifier 311 is an amplifier that amplifies the received signal supplied to the input terminal 301. The variable gain amplifier 312 is an amplifier for controlling the gain. The bandpass filter 313 is a filter for limiting the frequency band. The frequency band passing through the band pass filter 313 is a relatively high frequency band handled by the first high frequency circuit 310.
　第２高周波回路３２０は、第２フィルタ２２０から供給された比較的低い周波数帯域の高周波信号を扱う回路である。この第２高周波回路３２０は、第１高周波回路３１０と同様に、低雑音増幅器３２１と、可変利得増幅器３２２と、バンドパスフィルタ３２３とを備える。低雑音増幅器３２１は、入力端子３０２に供給された受信信号を増幅するアンプである。可変利得増幅器３２２は、利得を制御するためのアンプである。バンドパスフィルタ３２３は、周波数帯域を制限するためのフィルタである。このバンドパスフィルタ３２３を通過する周波数帯域は、第２高周波回路３２０が扱う比較的低い周波数帯域であり、バンドパスフィルタ３１３の周波数帯域とは異なる。なお、第１高周波回路３１０および第２高周波回路３２０は、特許請求の範囲に記載の複数の高周波回路の一例である。 The second high frequency circuit 320 is a circuit that handles a high frequency signal in a relatively low frequency band supplied from the second filter 220. Similar to the first high frequency circuit 310, the second high frequency circuit 320 includes a low noise amplifier 321, a variable gain amplifier 322, and a band pass filter 323. The low noise amplifier 321 is an amplifier that amplifies the reception signal supplied to the input terminal 302. The variable gain amplifier 322 is an amplifier for controlling the gain. The band pass filter 323 is a filter for limiting the frequency band. The frequency band passing through the band pass filter 323 is a relatively low frequency band handled by the second high frequency circuit 320 and is different from the frequency band of the band pass filter 313. The first high-frequency circuit 310 and the second high-frequency circuit 320 are an example of a plurality of high-frequency circuits described in the claims.
　局部発振信号生成回路３４０は、局部発振信号を生成する回路である。この局部発振信号生成回路３４０は、位相同期回路（ＰＬＬ：Phase Locked Loop）３４１と、バッファ３４５および３４６とを備える。位相同期回路３４１は、一定の周波数に同期した交流信号を出力する回路である。バッファ３４５および３４６は、位相同期回路３４１の出力を局部発振信号として出力する回路である。この局部発振信号生成回路３４０によって生成された局部発振信号は、第１混合回路３５０および第２混合回路３６０に供給される。 The local oscillation signal generation circuit 340 is a circuit that generates a local oscillation signal. The local oscillation signal generation circuit 340 includes a phase locked loop (PLL: Phase Locked Loop) 341 and buffers 345 and 346. The phase synchronization circuit 341 is a circuit that outputs an AC signal synchronized with a certain frequency. The buffers 345 and 346 are circuits that output the output of the phase synchronization circuit 341 as a local oscillation signal. The local oscillation signal generated by the local oscillation signal generation circuit 340 is supplied to the first mixing circuit 350 and the second mixing circuit 360.
　第１混合回路３５０は、第１高周波回路３１０から出力された比較的高い周波数帯域の高周波信号と局部発振信号生成回路３４０から供給された局部発振信号とを混合して、低周波信号を生成する回路である。 The first mixing circuit 350 mixes the high frequency signal in the relatively high frequency band output from the first high frequency circuit 310 and the local oscillation signal supplied from the local oscillation signal generation circuit 340 to generate a low frequency signal. Circuit.
　第２混合回路３６０は、第２高周波回路３２０から出力された比較的低い周波数帯域の高周波信号と局部発振信号生成回路３４０から供給された局部発振信号とを混合して、低周波信号を生成する回路である。なお、第１混合回路３５０および第２混合回路３６０は、特許請求の範囲に記載の複数の混合回路の一例である。 The second mixing circuit 360 mixes the high frequency signal of the relatively low frequency band output from the second high frequency circuit 320 and the local oscillation signal supplied from the local oscillation signal generation circuit 340 to generate a low frequency signal. Circuit. The first mixing circuit 350 and the second mixing circuit 360 are an example of a plurality of mixing circuits described in the claims.
　合流回路３７０は、第１混合回路３５０および第２混合回路３６０によって生成された低周波信号を合流させて、何れか一方からの低周波信号を出力する回路である。 The merge circuit 370 is a circuit that merges the low frequency signals generated by the first mixing circuit 350 and the second mixing circuit 360 and outputs a low frequency signal from one of them.
　制御部３８０は、受信装置３００の各部を制御するものである。この制御部３８０は、例えば、受信チャンネルの指示入力に従って、周波数帯域に適合する回路のみを動作させる。すなわち、受信チャンネルが比較的高い周波数帯域のものであれば、第１高周波回路３１０および第１混合回路３５０を動作させる一方で、第２高周波回路３２０および第２混合回路３６０を動作させない、という制御を行う。また、受信チャンネルが比較的低い周波数帯域のものであれば、第２高周波回路３２０および第２混合回路３６０を動作させる一方で、第１高周波回路３１０および第１混合回路３５０を動作させない、という制御を行う。 The control unit 380 controls each unit of the receiving device 300. For example, the control unit 380 operates only a circuit suitable for the frequency band in accordance with an instruction input of the reception channel. That is, if the reception channel has a relatively high frequency band, the first high frequency circuit 310 and the first mixing circuit 350 are operated, while the second high frequency circuit 320 and the second mixing circuit 360 are not operated. I do. If the reception channel is in a relatively low frequency band, the second high frequency circuit 320 and the second mixing circuit 360 are operated, while the first high frequency circuit 310 and the first mixing circuit 350 are not operated. I do.
　低周波回路３９０は、合流回路３７０から出力された低周波信号を扱う回路であり、ローパスフィルタ（ＬＰＦ）３９１と、可変利得増幅器３９２とを備える。ローパスフィルタ３９１は、周波数帯域を制限するためのフィルタである。このローパスフィルタ３９１を通過する周波数帯域は、低周波信号の周波数帯域であり、バンドパスフィルタ３１３および３２３の周波数帯域とは異なる。なお、低周波回路３９０に適した周波数帯域に対応するものであれば、ローパスフィルタ３９１に代えてバンドパスフィルタを利用するようにしてもよい。可変利得増幅器３９２は、利得を制御するためのアンプである。 The low frequency circuit 390 is a circuit that handles a low frequency signal output from the junction circuit 370 and includes a low-pass filter (LPF) 391 and a variable gain amplifier 392. The low-pass filter 391 is a filter for limiting the frequency band. The frequency band that passes through the low-pass filter 391 is the frequency band of the low-frequency signal, and is different from the frequency band of the band- pass filters 313 and 323. Note that a band pass filter may be used instead of the low pass filter 391 as long as it corresponds to a frequency band suitable for the low frequency circuit 390. The variable gain amplifier 392 is an amplifier for controlling the gain.
　［受信装置の動作制御］
　図３は、本技術の実施の形態における受信装置の動作制御の一例を示す図である。上述のように、制御部３８０は、受信チャンネルの指示入力に従って、周波数帯域に適合する回路のみを動作させる制御を行う。そのために、制御部３８０は、受信チャンネルが比較的高い周波数帯域のものであれば、イネーブル信号ＥＮＡ１乃至ＥＮＡ５をアサートして、イネーブル信号ＥＮＢ１乃至ＥＮＢ５をアサートしない（デアサートする）。また、制御部３８０は、受信チャンネルが比較的低い周波数帯域のものであれば、イネーブル信号ＥＮＢ１乃至ＥＮＢ５をアサートして、イネーブル信号ＥＮＡ１乃至ＥＮＡ５をアサートしない（デアサートする）。 [Receiver operation control]
FIG. 3 is a diagram illustrating an example of operation control of the reception device according to the embodiment of the present technology. As described above, the control unit 380 performs control to operate only a circuit that conforms to the frequency band in accordance with the instruction input of the reception channel. Therefore, if the reception channel has a relatively high frequency band, the control unit 380 asserts the enable signals ENA1 to ENA5 and does not assert (deassert) the enable signals ENB1 to ENB5. Further, if the reception channel has a relatively low frequency band, the control unit 380 asserts the enable signals ENB1 to ENB5 and does not assert (deassert) the enable signals ENA1 to ENA5.
　これらイネーブル信号ＥＮＡ１乃至ＥＮＡ５およびＥＮＢ１乃至ＥＮＢ５は、第１高周波回路３１０、第２高周波回路３２０、第１混合回路３５０、第２混合回路３６０および局部発振信号生成回路３４０に分配される。すなわち、イネーブル信号ＥＮＡ１はバッファ３４５に供給される。イネーブル信号ＥＮＡ２は第１混合回路３５０に供給される。イネーブル信号ＥＮＡ３はバンドパスフィルタ３１３に供給される。イネーブル信号ＥＮＡ４は可変利得増幅器３１２に供給される。イネーブル信号ＥＮＡ５は低雑音増幅器３１１に供給される。イネーブル信号ＥＮＢ１はバッファ３４６に供給される。イネーブル信号ＥＮＢ２は第２混合回路３６０に供給される。イネーブル信号ＥＮＢ３はバンドパスフィルタ３２３に供給される。イネーブル信号ＥＮＢ４は可変利得増幅器３２２に供給される。イネーブル信号ＥＮＢ５は低雑音増幅器３２１に供給される。 These enable signals ENA1 to ENA5 and ENB1 to ENB5 are distributed to the first high frequency circuit 310, the second high frequency circuit 320, the first mixing circuit 350, the second mixing circuit 360, and the local oscillation signal generation circuit 340. That is, the enable signal ENA1 is supplied to the buffer 345. The enable signal ENA2 is supplied to the first mixing circuit 350. The enable signal ENA3 is supplied to the band pass filter 313. The enable signal ENA4 is supplied to the variable gain amplifier 312. The enable signal ENA5 is supplied to the low noise amplifier 311. The enable signal ENB1 is supplied to the buffer 346. The enable signal ENB2 is supplied to the second mixing circuit 360. The enable signal ENB3 is supplied to the band pass filter 323. The enable signal ENB4 is supplied to the variable gain amplifier 322. The enable signal ENB5 is supplied to the low noise amplifier 321.
　これにより、受信チャンネルが比較的高い周波数帯域のものであれば、その周波数帯域に適合する第１高周波回路３１０および第１混合回路３５０が動作し、他の第２高周波回路３２０および第２混合回路３６０が動作しないように制御される。一方、受信チャンネルが比較的低い周波数帯域のものであれば、その周波数帯域に適合する第２高周波回路３２０および第２混合回路３６０が動作し、他の第１高周波回路３１０および第１混合回路３５０が動作しないように制御される。したがって、受信チャンネルの周波数帯域に応じて不要な回路の動作を抑制することができ、省電力化を図ることができる。 Thus, if the reception channel is in a relatively high frequency band, the first high frequency circuit 310 and the first mixing circuit 350 that match the frequency band operate, and the other second high frequency circuit 320 and the second mixing circuit. 360 is controlled not to operate. On the other hand, if the reception channel is in a relatively low frequency band, the second high frequency circuit 320 and the second mixing circuit 360 that match the frequency band operate, and the other first high frequency circuit 310 and the first mixing circuit 350 operate. Is controlled not to operate. Therefore, unnecessary circuit operations can be suppressed in accordance with the frequency band of the reception channel, and power saving can be achieved.
　なお、この例では、受信チャンネルが比較的高い周波数帯域のものである場合には、イネーブル信号ＥＮＢ１乃至ＥＮＢ５の全てをデアサートすることを想定したが、少なくとも１つをデアサートすることにより一定の省電力効果は得られる。同様に、受信チャンネルが比較的低い周波数帯域のものである場合に、イネーブル信号ＥＮＡ１乃至ＥＮＡ５の少なくとも１つをデアサートするようにしてもよい。 In this example, it is assumed that all of the enable signals ENB1 to ENB5 are deasserted when the reception channel is in a relatively high frequency band. However, constant power saving is achieved by deasserting at least one of the enable signals. The effect is obtained. Similarly, when the reception channel is in a relatively low frequency band, at least one of the enable signals ENA1 to ENA5 may be deasserted.
　図４は、本技術の実施の形態における第１混合回路３５０、第２混合回路３６０および合流回路３７０の回路構成例を示す図である。この例では、回路の各部が差動信号により動作することを想定する。 FIG. 4 is a diagram illustrating a circuit configuration example of the first mixing circuit 350, the second mixing circuit 360, and the merging circuit 370 according to the embodiment of the present technology. In this example, it is assumed that each part of the circuit operates with a differential signal.
　第１混合回路３５０は、２つのトランスコンダクタンスアンプ３５１および３５２と、４つのスイッチトランジスタ３５３乃至３５６とを備える。トランスコンダクタンスアンプ３５１および３５２は、第１高周波回路３１０から出力された高周波信号の電圧に応じた電流値を有する信号を出力するものである。このトランスコンダクタンスアンプ３５１および３５２には、イネーブル信号ＥＮＡ２が供給される。スイッチトランジスタ３５３乃至３５６は、トランスコンダクタンスアンプ３５１および３５２から出力された信号を、バッファ３４５からの局部発振信号に応じてスイッチングする回路である。 The first mixing circuit 350 includes two transconductance amplifiers 351 and 352 and four switch transistors 353 to 356. The transconductance amplifiers 351 and 352 output a signal having a current value corresponding to the voltage of the high-frequency signal output from the first high-frequency circuit 310. The transconductance amplifiers 351 and 352 are supplied with an enable signal ENA2. The switch transistors 353 to 356 are circuits that switch the signals output from the transconductance amplifiers 351 and 352 in accordance with the local oscillation signal from the buffer 345.
　第２混合回路３６０は、第１混合回路３５０と同様に、２つのトランスコンダクタンスアンプ３６１および３６２と、４つのスイッチトランジスタ３６３乃至３６６とを備える。トランスコンダクタンスアンプ３６１および３６２は、第２高周波回路３２０から出力された高周波信号の電圧に応じた電流値を有する信号を出力するものである。このトランスコンダクタンスアンプ３６１および３６２には、イネーブル信号ＥＮＢ２が供給される。スイッチトランジスタ３６３乃至３６６は、トランスコンダクタンスアンプ３６１および３６２から出力された信号を、バッファ３４６からの局部発振信号に応じてスイッチングする回路である。 Similarly to the first mixing circuit 350, the second mixing circuit 360 includes two transconductance amplifiers 361 and 362 and four switch transistors 363 to 366. The transconductance amplifiers 361 and 362 output a signal having a current value corresponding to the voltage of the high frequency signal output from the second high frequency circuit 320. The transconductance amplifiers 361 and 362 are supplied with an enable signal ENB2. The switch transistors 363 to 366 are circuits that switch the signals output from the transconductance amplifiers 361 and 362 in accordance with the local oscillation signal from the buffer 346.
　合流回路３７０は、オペアンプ３７１と、フィードバック抵抗３７２および３７３とを備える。これらは中間周波数またはベースバンド周波数の低周波帯域により動作し、第１混合回路３５０および第２混合回路３６０からの信号の電流に応じた電圧値を有する信号を出力する。 The junction circuit 370 includes an operational amplifier 371 and feedback resistors 372 and 373. These operate in the low frequency band of the intermediate frequency or baseband frequency, and output a signal having a voltage value corresponding to the current of the signal from the first mixing circuit 350 and the second mixing circuit 360.
　この回路構成例においては、受信チャンネルが比較的高い周波数帯域のものである場合には、バッファ３４５、トランスコンダクタンスアンプ３５１および３５２が動作し、バッファ３４６、トランスコンダクタンスアンプ３６１および３６２は動作しない。一方、受信チャンネルが比較的低い周波数帯域のものである場合には、バッファ３４６、トランスコンダクタンスアンプ３６１および３６２が動作し、バッファ３４５、トランスコンダクタンスアンプ３５１および３５２は動作しない。 In this circuit configuration example, when the reception channel is in a relatively high frequency band, the buffer 345 and the transconductance amplifiers 351 and 352 operate, and the buffer 346 and the transconductance amplifiers 361 and 362 do not operate. On the other hand, when the reception channel is in a relatively low frequency band, buffer 346 and transconductance amplifiers 361 and 362 operate, and buffer 345 and transconductance amplifiers 351 and 352 do not operate.
　このように、本技術の第１の実施の形態によれば、衛星放送の受信チャンネルの周波数帯域ごとに高周波回路および混合回路を設けることにより、回路の線形性の要求を緩和することができる。また、衛星放送の受信チャンネルの周波数帯域に応じて必要な回路のみを動作させることにより、省電力化を図ることができる。 As described above, according to the first embodiment of the present technology, by providing a high-frequency circuit and a mixing circuit for each frequency band of a satellite broadcast reception channel, the linearity requirement of the circuit can be relaxed. In addition, it is possible to save power by operating only necessary circuits according to the frequency band of the satellite broadcast reception channel.
　＜２．第２の実施の形態＞
　上述の第１の実施の形態では、衛星放送を受信することを想定したが、以下に説明する第２の実施の形態では、受信装置３００においてさらに地上波放送を受信することを想定する。 <2. Second Embodiment>
In the above-described first embodiment, it is assumed that satellite broadcasting is received. However, in the second embodiment described below, it is assumed that the receiving device 300 further receives terrestrial broadcasting.
　［受信システムの構成］
　図５は、本技術の第２の実施の形態における受信システムの構成例を示す図である。この第２の実施の形態における受信システムは、第１の実施の形態の構成に加えて、地上波アンテナ１０３を備える。また、受信装置３００は、入力端子３０３をさらに備えて、地上波アンテナ１０３からの地上波放送の受信信号（高周波信号）を受ける。なお、入力端子３０３は、特許請求の範囲に記載の他の入力端子の一例である。 [Reception system configuration]
FIG. 5 is a diagram illustrating a configuration example of a reception system according to the second embodiment of the present technology. The reception system according to the second embodiment includes a terrestrial antenna 103 in addition to the configuration of the first embodiment. The receiving apparatus 300 further includes an input terminal 303 and receives a terrestrial broadcast reception signal (high frequency signal) from the terrestrial antenna 103. The input terminal 303 is an example of another input terminal described in the claims.
　また、受信装置３００は、第３高周波回路３３０をさらに備える。この第３高周波回路３３０の出力は第２混合回路３６０に供給される。第２混合回路３６０の前段には切替回路３６９が設けられ、第２高周波回路３２０または第３高周波回路３３０の何れか一方の出力が第２混合回路３６０に供給される。第２混合回路３６０は、第１高周波回路３１０から出力された比較的高い周波数帯域の高周波信号または第３高周波回路３３０から出力された地上波放送の高周波信号の何れかに、局部発振信号生成回路３４０から供給された局部発振信号を混合して、低周波信号を生成する。それ以外の構成については、上述の第１の実施の形態のものと同様である。なお、第３高周波回路３３０は、特許請求の範囲に記載の他の高周波回路の一例である。 In addition, the receiving device 300 further includes a third high-frequency circuit 330. The output of the third high frequency circuit 330 is supplied to the second mixing circuit 360. A switching circuit 369 is provided in front of the second mixing circuit 360, and the output of either the second high-frequency circuit 320 or the third high-frequency circuit 330 is supplied to the second mixing circuit 360. The second mixing circuit 360 generates a local oscillation signal generation circuit for either a high-frequency signal in a relatively high frequency band output from the first high-frequency circuit 310 or a high-frequency signal in terrestrial broadcasting output from the third high-frequency circuit 330. The local oscillation signal supplied from 340 is mixed to generate a low frequency signal. Other configurations are the same as those in the first embodiment described above. The third high-frequency circuit 330 is an example of another high-frequency circuit described in the claims.
　また、この第２の実施の形態における第３高周波回路３３０についても、第１の実施の形態と同様に、制御部３８０によるイネーブル信号を用いて、動作の有無を制御してもよい。これにより、衛星放送および地上波放送の受信チャンネルの周波数帯域に応じて必要な回路のみを動作させることができ、省電力化を図ることができる。 Also, with respect to the third high-frequency circuit 330 in the second embodiment, the presence / absence of the operation may be controlled using the enable signal from the control unit 380, as in the first embodiment. As a result, only necessary circuits can be operated in accordance with the frequency bands of the reception channels of satellite broadcasting and terrestrial broadcasting, and power saving can be achieved.
　この第２の実施の形態によれば、衛星放送の受信チャンネルの周波数帯域ごとに高周波回路を設けるとともに、地上波放送の周波数帯域のための高周波回路を設けることにより、さらに地上波放送を受信することができる。高周波回路はそれぞれの周波数帯域に適合させることができるため、受信特性を改善することができる。 According to the second embodiment, a high-frequency circuit is provided for each frequency band of the satellite broadcast reception channel, and a high-frequency circuit for the frequency band of the terrestrial broadcast is further provided to further receive the terrestrial broadcast. be able to. Since the high frequency circuit can be adapted to each frequency band, reception characteristics can be improved.
　＜３．変形例＞
　上述の実施の形態では、位相同期回路３４１を周波数帯域によらずに共通なものとして設けていたが、これは周波数帯域ごとに設けてもよい。これにより、周波数帯域ごとに最適化した回路構成を採用することができる。 <3. Modification>
In the above-described embodiment, the phase synchronization circuit 341 is provided as a common circuit regardless of the frequency band. However, this may be provided for each frequency band. Thereby, a circuit configuration optimized for each frequency band can be employed.
　このように、本技術の実施の形態によれば、受信チャンネルの周波数帯域ごとに高周波回路および混合回路を設けることにより、回路の線形性の要求を緩和することができる。また、受信チャンネルの周波数帯域に応じて必要な回路のみを動作させることにより、省電力化を図ることができる。また、受信装置の外部において周波数信号帯域の選択フィルタを実装することができ、高周波回路に対する線形性の要求を緩和することが可能となる。これにより、消費電力増加を抑えながら、ＮＦ（雑音指数）特性などを改善し、受信性能を向上させることが可能となる。 As described above, according to the embodiment of the present technology, by providing the high-frequency circuit and the mixing circuit for each frequency band of the reception channel, it is possible to relax the requirement for the linearity of the circuit. Further, power saving can be achieved by operating only necessary circuits according to the frequency band of the reception channel. In addition, a frequency signal band selection filter can be mounted outside the receiving device, and the linearity requirement for the high-frequency circuit can be relaxed. As a result, it is possible to improve reception performance by improving NF (noise figure) characteristics and the like while suppressing an increase in power consumption.
　また、受信装置における各回路の動作周波数範囲を狭めることができ、消費電力の削減や特性の改善が可能となる。また、受信チャンネル以外の周波数帯域の回路群を動作させないように制御することにより、省電力化を図ることができる。また、これにより不要な信号を遮断することができ、それぞれの周波数帯域の入力信号間の干渉を抑えることができる。 Also, the operating frequency range of each circuit in the receiving device can be narrowed, and power consumption can be reduced and characteristics can be improved. In addition, power can be saved by controlling the circuit groups in the frequency band other than the reception channel not to operate. In addition, unnecessary signals can be blocked by this, and interference between input signals in the respective frequency bands can be suppressed.
　すなわち、本技術の実施の形態によれば、４Ｋ放送や８Ｋ放送に必要なチャンネル数の増加に対して、消費電力の増大を防ぎつつ、受信性能を劣化させることなく受信可能な受信装置を提供することができる。 That is, according to the embodiment of the present technology, it is possible to provide a receiving device that can receive without deteriorating reception performance while preventing increase in power consumption with respect to an increase in the number of channels necessary for 4K broadcasting or 8K broadcasting. can do.
　なお、上述の実施の形態は本技術を具現化するための一例を示したものであり、実施の形態における事項と、特許請求の範囲における発明特定事項とはそれぞれ対応関係を有する。同様に、特許請求の範囲における発明特定事項と、これと同一名称を付した本技術の実施の形態における事項とはそれぞれ対応関係を有する。ただし、本技術は実施の形態に限定されるものではなく、その要旨を逸脱しない範囲において実施の形態に種々の変形を施すことにより具現化することができる。 The above-described embodiment shows an example for embodying the present technology, and the matters in the embodiment and the invention-specific matters in the claims have a corresponding relationship. Similarly, the invention specific matter in the claims and the matter in the embodiment of the present technology having the same name as this have a corresponding relationship. However, the present technology is not limited to the embodiment, and can be embodied by making various modifications to the embodiment without departing from the gist thereof.
　なお、本明細書に記載された効果はあくまで例示であって、限定されるものではなく、また、他の効果があってもよい。 It should be noted that the effects described in this specification are merely examples, and are not limited, and other effects may be obtained.
　なお、本技術は以下のような構成もとることができる。
（１）１つのアンテナからの高周波信号を別々に受ける複数の入力端子と、
　前記複数の入力端子の各々に対応して設けられて前記１つのアンテナからの高周波信号を互いに異なる周波数帯域において扱う複数の高周波回路と、
　前記複数の高周波回路の各々の前記周波数帯域に対応した局部発振周波数を生成する局部発振信号生成回路と、
　前記複数の高周波回路の各々からの前記高周波信号とそれに対応する前記局部発振周波数とを混合してそれぞれ低周波信号を生成する複数の混合回路と、
　前記複数の混合回路において生成された低周波信号を合流させて出力する合流回路と
を具備する受信装置。
（２）周波数帯域の指示入力を受けて前記複数の高周波回路および前記複数の混合回路のうち前記指示入力に係る周波数帯域に適合するもののみを動作させる制御部をさらに具備する前記（１）に記載の受信装置。
（３）前記複数の入力端子は、それぞれの周波数帯域に応じたフィルタ処理が施された前記高周波信号を受ける前記（１）または（２）に記載の受信装置。
（４）前記複数の高周波回路は、テレビ放送の高周波信号を扱う前記（１）から（３）のいずれかに記載の受信装置。
（５）前記複数の高周波回路は、衛星放送の高周波信号を扱う前記（１）から（４）のいずれかに記載の受信装置。
（６）地上波放送を受信する他のアンテナからの高周波信号を受ける他の入力端子と、
　前記他の入力端子からの周波数帯域において前記他のアンテナからの地上波放送の高周波信号を扱う他の高周波回路とをさらに具備し、
　前記複数の混合回路の一つは、前記他の高周波回路からの高周波信号をさらに混合して低周波信号を生成する
前記（５）に記載の受信装置。
（７）１つのアンテナと、
　前記１つのアンテナからの高周波信号を互いに異なる周波数帯域において扱う複数の高周波回路と、
　前記複数の高周波回路の各々の前記周波数帯域に対応した局部発振周波数を生成する局部発振信号生成回路と、
　前記複数の高周波回路の各々からの前記高周波信号とそれに対応する前記局部発振周波数とを混合してそれぞれ低周波信号を生成する複数の混合回路と、
　前記複数の混合回路において生成された低周波信号を合流させて出力する合流回路と
を具備する受信システム。
（８）周波数帯域の指示入力を受けて前記複数の高周波回路および前記複数の混合回路のうち前記指示入力に係る周波数帯域に適合するもののみを動作させる制御部をさらに具備する前記（７）に記載の受信システム。
（９）前記１つのアンテナからの高周波信号に対してそれぞれの周波数帯域に応じたフィルタ処理を施す複数のフィルタをさらに具備し、
　前記複数の高周波回路の各々は、前記複数のフィルタの出力を前記１つのアンテナからの高周波信号として扱う
前記（７）または（８）に記載の受信システム。
（１０）前記複数の高周波回路は、テレビ放送の高周波信号を扱う前記（７）から（９）のいずれかに記載の受信システム。
（１１）前記１つのアンテナは、衛星放送を受信するためのアンテナであり、
　前記複数の高周波回路は、衛星放送の異なる周波数帯域の高周波信号を扱う
前記（７）から（１０）のいずれかに記載の受信システム。
（１２）地上波放送を受信するための他のアンテナと、
　前記他のアンテナからの地上波放送の高周波信号を扱う他の高周波回路とをさらに具備し、
　前記複数の混合回路の一つは、前記他の高周波回路からの高周波信号をさらに混合して低周波信号を生成する
前記（１１）に記載の受信システム。 In addition, this technique can also take the following structures.
(1) a plurality of input terminals that separately receive high-frequency signals from one antenna;
A plurality of high frequency circuits provided corresponding to each of the plurality of input terminals and handling high frequency signals from the one antenna in different frequency bands;
A local oscillation signal generation circuit that generates a local oscillation frequency corresponding to the frequency band of each of the plurality of high-frequency circuits;
A plurality of mixing circuits for mixing the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively;
A receiving device comprising: a combining circuit that combines and outputs the low-frequency signals generated in the plurality of mixing circuits.
(2) The system according to (1), further comprising a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high frequency circuits and the plurality of mixing circuits that conforms to the frequency band according to the instruction input. The receiving device described.
(3) The receiving device according to (1) or (2), wherein the plurality of input terminals receive the high-frequency signal that has been subjected to filter processing according to each frequency band.
(4) The receiving device according to any one of (1) to (3), wherein the plurality of high-frequency circuits handle high-frequency signals for television broadcasting.
(5) The receiving device according to any one of (1) to (4), wherein the plurality of high-frequency circuits handle high-frequency signals of satellite broadcasting.
(6) Other input terminals that receive high-frequency signals from other antennas that receive terrestrial broadcasts;
And further comprising another high-frequency circuit that handles high-frequency signals of terrestrial broadcasting from the other antenna in a frequency band from the other input terminal,
The receiving device according to (5), wherein one of the plurality of mixing circuits further mixes high-frequency signals from the other high-frequency circuits to generate a low-frequency signal.
(7) one antenna;
A plurality of high-frequency circuits that handle high-frequency signals from the one antenna in different frequency bands;
A local oscillation signal generation circuit that generates a local oscillation frequency corresponding to the frequency band of each of the plurality of high-frequency circuits;
A plurality of mixing circuits for mixing the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively;
A receiving system comprising: a merging circuit that merges and outputs the low-frequency signals generated in the plurality of mixing circuits.
(8) The method according to (7), further comprising a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high frequency circuits and the plurality of mixing circuits that conforms to the frequency band according to the instruction input. The receiving system described.
(9) It further includes a plurality of filters that perform a filtering process according to each frequency band on the high-frequency signal from the one antenna,
The reception system according to (7) or (8), wherein each of the plurality of high-frequency circuits treats outputs of the plurality of filters as high-frequency signals from the one antenna.
(10) The reception system according to any one of (7) to (9), wherein the plurality of high-frequency circuits handle high-frequency signals for television broadcasting.
(11) The one antenna is an antenna for receiving satellite broadcasting,
The reception system according to any one of (7) to (10), wherein the plurality of high frequency circuits handle high frequency signals in different frequency bands of satellite broadcasting.
(12) Other antennas for receiving terrestrial broadcasts;
And further comprising another high-frequency circuit that handles high-frequency signals of terrestrial broadcasting from the other antennas,
The receiving system according to (11), wherein one of the plurality of mixing circuits further mixes high-frequency signals from the other high-frequency circuits to generate a low-frequency signal.
　１００　アンテナ
　１０３　地上波アンテナ
　２１０　第１フィルタ
　２２０　第２フィルタ
　３００　受信装置
　３０１、３０２、３０３、３０８　入力端子
　３０９　出力端子
　３１０　第１高周波回路
　３１１、３２１、３３１　低雑音増幅器（ＬＮＡ）
　３１２、３２２、３３２　可変利得増幅器（ＲＦ－ＶＧＡ）
　３１３、３２３、３３３　バンドパスフィルタ（ＲＦ－ＢＰＦ）
　３２０　第２高周波回路
　３３０　第３高周波回路
　３４０　局部発振信号生成回路
　３４１　位相同期回路（ＰＬＬ）
　３４５、３４６　バッファ
　３５０　第１混合回路
　３５１、３５２、３６１、３６２　トランスコンダクタンスアンプ
　３５３～３５６、３６３～３６６　スイッチトランジスタ
　３６０　第２混合回路
　３７０　合流回路
　３７１　オペアンプ
　３７２、３７３　フィードバック抵抗
　３８０　制御部
　３９０　低周波回路
　３９１　ローパスフィルタ（ＢＢ－ＬＰＦ）
　３９２　可変利得増幅器（ＢＢ－ＶＧＡ） DESCRIPTION OF SYMBOLS 100 Antenna 103 Terrestrial antenna 210 1st filter 220 2nd filter 300 Receiver 301,302,303,308 Input terminal 309 Output terminal 310 1st high frequency circuit 311,321,331 Low noise amplifier (LNA)
312 322 332 Variable Gain Amplifier (RF-VGA)
313, 323, 333 Band pass filter (RF-BPF)
320 Second high-frequency circuit 330 Third high-frequency circuit 340 Local oscillation signal generation circuit 341 Phase synchronization circuit (PLL)
345, 346 Buffer 350 First mixing circuit 351, 352, 361, 362 Transconductance amplifier 353-356, 363-366 Switch transistor 360 Second mixing circuit 370 Junction circuit 371 Operational amplifier 372, 373 Feedback resistance 380 Control unit 390 Low frequency circuit 391 Low-pass filter (BB-LPF)
392 Variable Gain Amplifier (BB-VGA)

Claims (12)

  1. 　１つのアンテナからの高周波信号を別々に受ける複数の入力端子と、
    　前記複数の入力端子の各々に対応して設けられて前記１つのアンテナからの高周波信号を互いに異なる周波数帯域において扱う複数の高周波回路と、
    　前記複数の高周波回路の各々の前記周波数帯域に対応した局部発振周波数を生成する局部発振信号生成回路と、
    　前記複数の高周波回路の各々からの前記高周波信号とそれに対応する前記局部発振周波数とを混合してそれぞれ低周波信号を生成する複数の混合回路と、
    　前記複数の混合回路において生成された低周波信号を合流させて出力する合流回路と
    を具備する受信装置。     A plurality of input terminals for separately receiving high-frequency signals from one antenna;
    A plurality of high frequency circuits provided corresponding to each of the plurality of input terminals and handling high frequency signals from the one antenna in different frequency bands;
    A local oscillation signal generation circuit that generates a local oscillation frequency corresponding to the frequency band of each of the plurality of high-frequency circuits;
    A plurality of mixing circuits for mixing the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively;
    A receiving device comprising: a combining circuit that combines and outputs the low-frequency signals generated in the plurality of mixing circuits.
  2. 　周波数帯域の指示入力を受けて前記複数の高周波回路および前記複数の混合回路のうち前記指示入力に係る周波数帯域に適合するもののみを動作させる制御部をさらに具備する請求項１記載の受信装置。 The receiving device according to claim 1, further comprising a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high-frequency circuits and the plurality of mixing circuits that conforms to a frequency band related to the instruction input.
  3. 　前記複数の入力端子は、それぞれの周波数帯域に応じたフィルタ処理が施された前記高周波信号を受ける請求項１記載の受信装置。 The receiving apparatus according to claim 1, wherein the plurality of input terminals receive the high-frequency signal that has been subjected to filter processing according to each frequency band.
  4. 　前記複数の高周波回路は、テレビ放送の高周波信号を扱う請求項１記載の受信装置。 The receiving device according to claim 1, wherein the plurality of high frequency circuits handle high frequency signals of television broadcasting.
  5. 　前記複数の高周波回路は、衛星放送の高周波信号を扱う請求項１記載の受信装置。 The receiving device according to claim 1, wherein the plurality of high frequency circuits handle high frequency signals of satellite broadcasting.
  6. 　地上波放送を受信する他のアンテナからの高周波信号を受ける他の入力端子と、
    　前記他の入力端子からの周波数帯域において前記他のアンテナからの地上波放送の高周波信号を扱う他の高周波回路とをさらに具備し、
    　前記複数の混合回路の一つは、前記他の高周波回路からの高周波信号をさらに混合して低周波信号を生成する
    請求項５記載の受信装置。     Other input terminals that receive high-frequency signals from other antennas that receive terrestrial broadcasts,
    And further comprising another high-frequency circuit that handles high-frequency signals of terrestrial broadcasting from the other antenna in a frequency band from the other input terminal,
    The receiving apparatus according to claim 5, wherein one of the plurality of mixing circuits further mixes high-frequency signals from the other high-frequency circuits to generate a low-frequency signal.
  7. 　１つのアンテナと、
    　前記１つのアンテナからの高周波信号を互いに異なる周波数帯域において扱う複数の高周波回路と、
    　前記複数の高周波回路の各々の前記周波数帯域に対応した局部発振周波数を生成する局部発振信号生成回路と、
    　前記複数の高周波回路の各々からの前記高周波信号とそれに対応する前記局部発振周波数とを混合してそれぞれ低周波信号を生成する複数の混合回路と、
    　前記複数の混合回路において生成された低周波信号を合流させて出力する合流回路と
    を具備する受信システム。     One antenna and
    A plurality of high-frequency circuits that handle high-frequency signals from the one antenna in different frequency bands;
    A local oscillation signal generation circuit that generates a local oscillation frequency corresponding to the frequency band of each of the plurality of high-frequency circuits;
    A plurality of mixing circuits for mixing the high-frequency signal from each of the plurality of high-frequency circuits and the corresponding local oscillation frequency to generate low-frequency signals, respectively;
    A receiving system comprising: a merging circuit that merges and outputs the low-frequency signals generated in the plurality of mixing circuits.
  8. 　周波数帯域の指示入力を受けて前記複数の高周波回路および前記複数の混合回路のうち前記指示入力に係る周波数帯域に適合するもののみを動作させる制御部をさらに具備する請求項７記載の受信システム。 8. The receiving system according to claim 7, further comprising a control unit that receives an instruction input of a frequency band and operates only one of the plurality of high-frequency circuits and the plurality of mixing circuits that conforms to a frequency band related to the instruction input.
  9. 　前記１つのアンテナからの高周波信号に対してそれぞれの周波数帯域に応じたフィルタ処理を施す複数のフィルタをさらに具備し、
    　前記複数の高周波回路の各々は、前記複数のフィルタの出力を前記１つのアンテナからの高周波信号として扱う
    請求項７記載の受信システム。     A plurality of filters for applying a filtering process corresponding to each frequency band to the high-frequency signal from the one antenna;
    The receiving system according to claim 7, wherein each of the plurality of high frequency circuits treats outputs of the plurality of filters as high frequency signals from the one antenna.
  10. 　前記複数の高周波回路は、テレビ放送の高周波信号を扱う請求項７記載の受信システム。 The receiving system according to claim 7, wherein the plurality of high frequency circuits handle high frequency signals of television broadcasting.
  11. 　前記１つのアンテナは、衛星放送を受信するためのアンテナであり、
    　前記複数の高周波回路は、衛星放送の異なる周波数帯域の高周波信号を扱う
    請求項７記載の受信システム。     The one antenna is an antenna for receiving satellite broadcasting,
    The receiving system according to claim 7, wherein the plurality of high frequency circuits handle high frequency signals in different frequency bands of satellite broadcasting.
  12. 　地上波放送を受信するための他のアンテナと、
    　前記他のアンテナからの地上波放送の高周波信号を扱う他の高周波回路とをさらに具備し、
    　前記複数の混合回路の一つは、前記他の高周波回路からの高周波信号をさらに混合して低周波信号を生成する
    請求項１１記載の受信システム。     With other antennas to receive terrestrial broadcasts,
    And further comprising another high-frequency circuit that handles high-frequency signals of terrestrial broadcasting from the other antennas,
    The receiving system according to claim 11, wherein one of the plurality of mixing circuits further mixes high-frequency signals from the other high-frequency circuits to generate a low-frequency signal.
PCT/JP2017/022640 2016-08-22 2017-06-20 Receiving device and receiving system WO2018037687A1 (en)

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EP4020822A4 (en) * 2019-08-19 2022-11-16 Sony Semiconductor Solutions Corporation Tuner ic

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WO2020226090A1 (en) * 2019-05-09 2020-11-12 ソニーセミコンダクタソリューションズ株式会社 Semiconductor chip and receiving device
TWI740471B (en) * 2019-05-09 2021-09-21 日商索尼半導體解決方案公司 Semiconductor chip and receiving device
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